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generator: refactor buildWrappers to make it more generic

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Prepare for using buildWrappers to generate code for the QEMU / LXC
APIs too.

Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
This commit is contained in:
Daniel P. Berrangé 2022-03-24 16:16:33 +00:00
parent f1e5b5c18f
commit c8abe55d4c
2 changed files with 33 additions and 21 deletions
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41
generator.py
View File

@ -1194,6 +1194,19 @@ def buildWrappers(module: str) -> None:
print("ERROR: Unknown module type: %s" % module)
return None
package = module.replace('-', '_')
if module == "libvirt":
pymod = "libvirtmod"
cygmod = "cygvirtmod"
elif module == "libvirt-lxc":
pymod = "libvirtmod_lxc"
cygmod = "cygvirtmod_lxc"
elif module == "libvirt-qemu":
pymod = "libvirtmod_qemu"
cygmod = "cygvirtmod_qemu"
else:
raise Exception("Unknown module '%s'" % module)
for tinfo in classes_type.values():
function_classes[tinfo[2]] = []
@ -1242,7 +1255,7 @@ def buildWrappers(module: str) -> None:
info = (0, func, name, ret, args, file, mod)
function_classes['None'].append(info)
classes_file = "build/%s.py" % module
classes_file = "build/%s.py" % package
extra_file = "%s-override.py" % module
extra = None
@ -1261,7 +1274,19 @@ def buildWrappers(module: str) -> None:
classes.write("#\n")
classes.write("# WARNING WARNING WARNING WARNING\n")
classes.write("#\n")
classes.write("try:\n")
classes.write(" import %s # type: ignore\n" % pymod)
classes.write("except ImportError as lib_e:\n")
classes.write(" try:\n")
classes.write(" import %s as %s # type: ignore\n" % (cygmod, pymod))
classes.write(" except ImportError as cyg_e:\n")
classes.write(" if \"No module named\" in str(cyg_e):\n")
classes.write(" raise lib_e\n\n")
if extra:
classes.write("# WARNING WARNING WARNING WARNING\n")
classes.write("#\n")
classes.write("# Manually written part of python bindings for libvirt\n")
classes.writelines(extra.readlines())
classes.write("#\n")
classes.write("# WARNING WARNING WARNING WARNING\n")
@ -1306,7 +1331,7 @@ def buildWrappers(module: str) -> None:
classes.write(" ret = ")
else:
classes.write(" ")
classes.write("libvirtmod.%s(" % name)
classes.write("%s.%s(" % (pymod, name))
for n, (a_name, a_type, a_info) in enumerate(args):
if n != 0:
classes.write(", ")
@ -1400,8 +1425,8 @@ def buildWrappers(module: str) -> None:
if classname in classes_destructors:
classes.write(" def __del__(self):\n")
classes.write(" if self._o is not None:\n")
classes.write(" libvirtmod.%s(self._o)\n" %
classes_destructors[classname])
classes.write(" %s.%s(self._o)\n" %
(pymod, classes_destructors[classname]))
classes.write(" self._o = None\n\n")
destruct = classes_destructors[classname]
@ -1420,8 +1445,8 @@ def buildWrappers(module: str) -> None:
classes.write(" def c_pointer(self):\n")
classes.write(" \"\"\"Get C pointer to underlying object\"\"\"\n")
classes.write(" return libvirtmod.%s_pointer(self._o)\n\n" %
classname)
classes.write(" return %s.%s_pointer(self._o)\n\n" %
(pymod, classname))
flist = function_classes[classname]
oldfile = ""
@ -1466,7 +1491,7 @@ def buildWrappers(module: str) -> None:
classes.write(" ret = ")
else:
classes.write(" ")
classes.write("libvirtmod.%s(" % name)
classes.write("%s.%s(" % (pymod, name))
for n, (a_name, a_type, a_info) in enumerate(args):
if n != 0:
classes.write(", ")
@ -1552,7 +1577,7 @@ def buildWrappers(module: str) -> None:
def shouldSkip(lines: List[str]) -> bool:
for line in lines:
offset = line.find("libvirtmod.")
offset = line.find(pymod + ".")
if offset != -1:
func = line[offset + 11:]
offset = func.find("(")

13
libvirt-override.py
View File

@ -1,16 +1,3 @@
#
# Manually written part of python bindings for libvirt
#
# On cygwin, the DLL is called cygvirtmod.dll
try:
import libvirtmod # type: ignore
except ImportError as lib_e:
try:
import cygvirtmod as libvirtmod # type: ignore
except ImportError as cyg_e:
if "No module named" in str(cyg_e):
raise lib_e
from types import TracebackType
from typing import Any, Callable, Dict, List, Optional, overload, Tuple, Type, TypeVar, Union